name: Disable Registry Tool
id: cd2cf33c-9201-11eb-a10a-acde48001122
version: 2
date: '2022-01-27'
author: Teoderick Contreras, Splunk
status: production
type: TTP
description: This search identifies modification of registry to disable the regedit
  or registry tools of the windows operating system. Since registry tool is a swiss
  knife in analyzing registry, malware such as RAT or trojan Spy disable this application
  to prevent the removal of their registry entry such as persistence, file less components
  and defense evasion.
data_source:
- Sysmon Event ID 13
search:
  selection1:
    Details: '0x00000001'
    TargetObject: '*\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\DisableRegistryTools'
  condition: selection1
how_to_implement: To successfully implement this search you need to be ingesting information
  on process that include the name of the process responsible for the changes from
  your endpoints into the `Endpoint` datamodel in the `Registry` node. Also make sure
  that this registry was included in your config files ex. sysmon config to be monitored.
known_false_positives: admin may disable this application for non technical user.
references:
- https://any.run/report/ea4ea08407d4ee72e009103a3b77e5a09412b722fdef67315ea63f22011152af/a866d7b1-c236-4f26-a391-5ae32213dfc4#registry
tags:
  analytic_story:
  - Windows Defense Evasion Tactics
  - Windows Registry Abuse
  asset_type: Endpoint
  confidence: 100
  impact: 40
  message: Disabled Registry Tools on $dest$
  mitre_attack_id:
  - T1562.001
  - T1562
  observable:
  - name: dest
    type: Endpoint
    role:
    - Victim
  product:
  - Splunk Enterprise
  - Splunk Enterprise Security
  - Splunk Cloud
  risk_score: 40
  security_domain: endpoint
tests:
- name: True Positive Test
  attack_data:
  - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-security.log
    source: WinEventLog:Security
    sourcetype: WinEventLog
    update_timestamp: true
  - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-system.log
    source: WinEventLog:System
    sourcetype: WinEventLog
    update_timestamp: true
  - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-sysmon.log
    source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
    sourcetype: xmlwineventlog